Display screen with a graphical user interface



The sole FIGURE is a front view of a display screen with a graphical user interface showing the new design.

The outermost, partial broken line rectangle showing a display screen as well as all other broken lines showing portions of the graphical user interface are included for the purpose of illustrating portions of the article; all broken lines form no part of the claimed design. 

CLAIM The ornamental design for a display screen with a graphical user interface, as shown and described. 